linux-kernel - [PATCH v2 0/6] Several device-mapper fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230603145244.1538-1-demi@invisiblethingslab.com>
Date:   Sat,  3 Jun 2023 10:52:38 -0400
From:   Demi Marie Obenour <demi@...isiblethingslab.com>
To:     Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...nel.org>, dm-devel@...hat.com
Cc:     Demi Marie Obenour <demi@...isiblethingslab.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/6] Several device-mapper fixes

This series contains several miscellaneous fixes to input validation in
device-mapper.  The only potentially controversial commits should be the
last two, which prevent creating devices named ".", "..", or "control".
The other patches fix input validation problems that have existed since
at least the beginning of git history.

Changes since v1:

- Fix silly mistake (using sizeof() on a pointer) caught by 0day bot.

Demi Marie Obenour (6):
  device-mapper: Check that target specs are sufficiently aligned
  device-mapper: Avoid pointer arithmetic overflow
  device-mapper: structs and parameter strings must not overlap
  device-mapper: Avoid double-fetch of version
  device-mapper: Refuse to create device named "control"
  device-mapper: "." and ".." are not valid symlink names

 drivers/md/dm-ioctl.c | 91 ++++++++++++++++++++++++++++++++++---------
 1 file changed, 72 insertions(+), 19 deletions(-)

-- 
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab